Electric switch



H. JACOBS.

ELECTRIC SWITCH.

APPLICATION FILED OCT. 20,,1916.

1,390,036. PatentMSept. 6, 1921:;

Inventor: Ernest H. Jacobs,

His flttorneg.

UNITED STATES PATENT OFFICE.

ERNEST H. JACOBS, OF SCHENECTADY, NEW YORK, ASSIGNOR TO GENERAL ELECTRIC COMPANY, A CORPORATION OF NEW YORK.

ELECTRIC SWITCH.

Specification of Letters Patent.

Patented Sept. 6, 1921.

T 0 all whom it may concern:

Be it known, that I, ERNEST H. JAooBs, a citizen of the United States, residing at Schenectady, in the county of Schenectady, State of New York, have invented certain new and useful Improvements in Electric Switches, of which the following is a specification.

My invention relates in general to electric switches of the oil break type and in particular to means for removably positioning the oil vessels of such switches.

The object of my invention is to provide a novel and improved'oil switch and particularly to provide an oil switch in which a plurality of cooperating contacts are controlled in separate oil vessels, with means detachable from the switch for easily removing and replacing any of said oil vessels independently.

In switches of the oil break type, it is well known that with the oil vessels detachably secured to the switch such arrangement facilitates repairs and examinations or switch parts. In small switches, the oil vessels can be easily removed, when detached, by hand but in switches of larger sizes it is necessary to provide means by which the switches may be removed or replaced. The means which I have provided is especially applicable to switches of large capacity and is adapted to be detachably secured to the switch and particularly arranged to easily raise or lower any oil tank of a multiple switch independently.

The novel features which I believe to be characteristic of my invention will be definitely indicated in the claims appended hereto, the feature of construction and mode of operating being understood by reference to the following description taken in connection with the accompanying drawing which shows the preferred embodiment of my invention, in which:

Figure 1 shows a side elevation of an electric switch embodying the novel features of my invention, Fig. 2 is a top elevation of my oil tank removing means attached to the supporting structure of the switch and Fig. 3 is an end elevation of my tank removing means in tank lowering position.

The switch shown in Fig. 1 is of standard construction and is shown as of the multipole type, each pole comprising cooperating contacts separable under oil, the contacts for each pole being inclosed in the oil vessels or containers 1, 2 and 3 and operated by a well known common operating mechanism, only partially shown. The mechanism for the switch is carried on a supporting structure 4: to which is also detachably secured the "oil tanks or vessels, 1,2 and 3. This supporting structure is made up of angle iron pieces and pipe framework in rotatable by means of a crank 8, pinion 9v and worm 10. Flexible connections or cords 11 are secured at one end to each of said drums 7 and adapted to be wound thereon upon rotation of the shaft 6. The cords 11.ex-'

tend from the drum 7 to near the top of the supporting structure 4 and pass over pulley guides'l2 and extend along two sides of the supporting structure passing over pulley guides 13, and are detachably connected together by a hook 14 at the other ends, as best shown in Fig. 2.

For enabling the winding and unwinding of said cords on said drums to raise and lower the tanks 1, 2 or 3, I provide cooperating members or carriages 15 on each side of the switch supporting structure provided with projections 16 and 17 having secured thereto pulleys or pulley wheels 18 and 19 respectively. The members 15 are detachably mounted on the members 20 of the supporting structure and are movable into a removing position corresponding to each oil vessel. To lower one of the oiltanks, for instance tank 1, the members 15 are placed on both sides of the supporting structure 4 in removing position for tank 1, as shown in Fig. 1, and the cords l1 slipped over the guides 21, best shown in Fig. 3, of the cooperating pulleys 18 and 19 for each member and then the portion of the cords '11 between the pulleys 18 and 19 pulled down to form a loop, the cords being loosened or unwound from the drums 8 for this purpose. Each oil tank carries on opposite sides thereof loop engaging means consisting of offset portions 22 carrying pulleys or pulley wheels 23; The tank to be lowered, for instance tank 1, is brought into operative relation with the loops formed in the cords 11 by slipping the loops in the cords under the pulleys 23. This tank is then detached from the supporting struc ture 4 and by rotating the shaft 6 in the proper direction, the cords 11 are unwound or lengthened, the slack being taken up by increasing the loops in the cords 11 due to the weight of the tank depending from the members 15 until the tank is gradually lowered to the ground, as shown in Fig. 1. By reversing the rotation of the shaft 6, the tank can, in a similar manner, be raised to a position to be secured to the supporting structure.

I It is apparent that when some other tank is desired to be lowered, this is accomplished by slip ing the cords 11 over guides 21 and from t e pulleys 18 and 19 and similarly from the pulleys 23 of the tank last operated. The members 15 can then be removed from the portion 20 of the supporting structure and placed in removing position corresponding to the next tank to be removed and the same' procedure as described followed to lower the tank. I have thus provided a simple and easily operated tank removing means adapted to remove any of a plurality of oil tanks independently, which means is arranged to be detachably secured to the switch whereby one tank removing means may be utilized for a plurality of switches.

My invention may be embodied in other forms than that shown and described and, I, therefore, do not wish to be restricted to the precise construction shown but intend to cover by the appended claims all changes and modifications withi'n' the scope of my,

invention and which will vbe apparent to those skilled in the art.

What I claim as new and desire to secure by Letters Patent of the United States, is

1. In a switch having a plurality of cooperatin contacts, a support for the switch, a plurality of separate oil vessels for said contacts removab y secured to said support and means for removing said vessels from switch mechanism, a plurality of oil vessels detachably secured to said support, and tank lowering and lifting means for said oil vessels comprising two cords extendin along the two sides of said su port, mem ers detachably secured to sai support and associated with said cords in tank operating position to form depending loops, loop-engaging means carried by each tank, and rotatable means operatively related to said cords to increase or decrease said loops.

4. In an oil switch, a support for the switch mechanism, a plurality of independent oil vessels detachably secured to said support, and detachable means for removing said oil vessels independently from said support comprising cooperating members removably positioned upon two sides of said support to assume a removing position for each of said vessels, cords extending along the sides of said support operatively related to said 006 cratin members to form loops therewith, oop-engagin means carried by each vessel, and a rotata le member cooperating with said cords to raise or lower that oil vessel which is in loop engaging position.

5. In a switch having a pluralit of cooperating contacts, a support for sai switch, -a plurality of separate oil vessels for said contactsremovably secured to said support, and means detachably secured to saidsupport for raising or lowering any of said vessels independently comprising cords carried by said support detachably connected togetlier at one end, a rotatable member to which the other ends of said cords are secured, oflset portions carried by said vessels, and means for enablin said cordsto engage the offset ortions of 51a vessel to be raised or lowere 6. In a switch having a plurality of cooperating contacts, a support for the switch, a plurality of independent oil vessels for said contacts removably secured to said support, and vessel removing means detachabl secured to said support for removing said sels independently from said support including aflexible means carried by said sup ort and adapted to form loops, means carrie by each oil vessel for en aging said loops, and means cooperating with said flexible means to enable the formation of said loops.

7.v In a switch having-two or more poles, a support for said switch, oil tanksfor said poles removably secured to said support, and

detachable means for inde endently raising or lowerng said tanks inc udin two cords carried by said support, rotatab e means for vesing pulleys carried by said tanks adapted to he slipped into loops formed by pulling down the cords between the pulleys of said members.

8. A device for raisin and lowering any one of a plurality of oi containing vessels of an electric apparatus, comprising flexible members adapted to extend along the sides of said vessels, members adapted to be detachably secured to a supporting tructure on each side of said vessels and cooperating with said flexible members to form loops for engaging each vessel, and a rotatable means operatively related to said flexible members to increase or decrease the length of said loops.

9. The combination with an electric switch having contacts separable under oil, a supporting structure for said switch, an oil container surrounding said contacts and detachably secured to said supporting structure, and tank removing means comprising cords extending along the sides of said support, members detachably secured to said supporting structure and associated with said cords to form depending loops, means carried by said container for engaging said loops, and rotatable means operatively related to said cords to increase or decrease said loops to raise or lower said container.

In witness whereof, I have hereunto set I 

